Touch sensor piano keyboard



FIG. 1 is a front view of a touch sensor piano keyboard showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top front perspective view thereof;

FIG. 8 is a top rear perspective view thereof;

FIG. 9 is a top right front perspective view thereof;

FIG. 10 is a top right rear perspective view thereof;

FIG. 11 is a top left rear perspective view thereof;

FIG. 12 is a top left front perspective view thereof;

FIG. 13 is a bottom right front perspective view thereof;

FIG. 14 is a bottom right rear perspective view thereof;

FIG. 15 is a bottom left rear perspective view thereof; and,

FIG. 16 is a bottom left front perspective view thereof. 

CLAIM The ornamental design for a touch sensor piano keyboard, as shown. 